Maintaining a wet wipes production machine is critical to ensuring consistent output quality, reducing downtime, and extending the equipment’s service life. Below is a systematic maintenance guide covering daily, weekly, monthly, and annual routines, as well as key precautions.
I. Daily Maintenance (Before/After Each Shift)
Daily checks and cleaning are the foundation of stable operation, focusing on removing residues and verifying basic functions.
Cleaning of Core Components
Unwinding Unit: Wipe the non-woven fabric unwinding roller, guide roller, and tension sensor with a soft, lint-free cloth to remove dust and adhesive residues. Ensure no debris blocks the tension control system to prevent material deviation or tearing.
Liquid Adding System: Flush the liquid storage tank, pipeline, and spraying nozzles with clean water (or purified water matching your production formula) after each shift. For machines using antibacterial solutions or essence, use a neutral detergent to avoid residue buildup that clogs nozzles or causes uneven liquid spraying.
Cutting & Sealing Unit: Use a heat-resistant scraper to remove melted non-woven fabric residues from the sealing knife and cutting blade. Wipe the surface with alcohol to prevent sticky residues from affecting sealing tightness and cutting accuracy.
Conveying & Packing Unit: Clear any fallen wet wipes or packaging film scraps from the conveyor belt and chain to avoid jamming.
Function Verification
Check the emergency stop button to ensure it is sensitive and can shut down the machine immediately when pressed.
Verify the operation of photoelectric sensors (for material positioning and packaging detection) — wipe the sensor lenses to prevent dust from causing false triggers.
Confirm that the air pressure of the pneumatic system (for sealing and material clamping) is within the specified range (usually 0.4–0.6 MPa).
II. Weekly Maintenance (Once a Week)
Weekly maintenance focuses on lubrication, fastener inspection, and minor component adjustment.
Lubrication of Moving Parts
Apply food-grade lubricating oil to the chain, gear, bearing, and sliding rail of the machine. Avoid using industrial lubricants, as they may contaminate wet wipes (critical for food-contact or baby wipes production).
Lubricate the cutting blade’s sliding track to reduce friction and prevent blade dulling or jamming.
Fastener & Wear Inspection
Tighten loose bolts, nuts, and screws on the unwinding frame, cutting unit, and sealing mechanism to prevent vibration-induced loosening during operation.
Check the wear status of the cutting blade and sealing knife: if there are nicks or uneven edges, sharpen or replace them in a timely manner to avoid unqualified cuts or poor sealing.
Inspect the conveyor belt for cracks, deformation, or skidding; adjust the belt tension if necessary.
Filter Cleaning
Clean the water filter of the liquid adding system and the air filter of the pneumatic system to prevent clogging that affects liquid flow rate or air pressure stability.
III. Monthly Maintenance (Once a Month)
Monthly maintenance targets system-level checks and component calibration to ensure long-term operational stability.
System Calibration
Calibrate the liquid adding volume to ensure each wet wipe absorbs the specified amount of solution (avoid over-wetting or under-wetting). Use a precision scale to test sample wipes and adjust the nozzle flow or conveyor speed accordingly.
Calibrate the cutting length and sealing temperature: confirm that the cut size matches the product specification, and the sealing temperature is suitable for the packaging film material (e.g., 120–180°C for PE film).
Electrical System Inspection
Check the wiring terminals of the control cabinet for looseness, overheating, or oxidation; tighten and clean them if needed to prevent short circuits or poor contact.
Verify the operation of the temperature controller, frequency converter, and PLC module; ensure the display data is accurate and the system responds normally.
Key Component Replacement
Replace the sealing gasket of the liquid storage tank and pipeline if there is leakage.
Replace worn pneumatic seals (O-rings) to avoid air leakage that affects sealing performance.
IV. Annual Maintenance (Once a Year)
Annual maintenance is a comprehensive overhaul, best performed by professional technicians or the equipment manufacturer’s after-sales team.
Overhaul of Core Systems
Disassemble and clean the liquid adding pump, nozzle, and heat sealing system to remove deep-seated residues and scale.
Inspect the wear of major components such as the main motor, reducer, and transmission shaft; replace worn bearings or gears.
Test the safety protection system (e.g., overload protection, door interlock) to ensure compliance with safety standards.
Performance Evaluation & Upgrade
Conduct a full-load operation test to evaluate the machine’s stability, output speed, and product qualification rate.
Consult the manufacturer about software upgrades (e.g., PLC program optimization) or component upgrades (e.g., high-efficiency nozzles, wear-resistant blades) to improve production efficiency.
V. Key Precautions for Maintenance
Safety First
Always cut off the power supply and release the air pressure before performing maintenance to avoid accidental startup. Hang a “Maintenance in Progress” sign on the control panel.
Wear protective gear (gloves, goggles) when cleaning or replacing sharp components like blades.
Avoid Contamination
Use only food-grade or medical-grade cleaning agents and lubricants for machines producing baby wipes, medical wipes, or food-contact wipes.
Ensure all cleaning tools are clean and lint-free to prevent secondary contamination of the machine and products.
Record Keeping
Establish a maintenance log to record the date, content, replaced parts, and machine operation status after maintenance. This helps track the machine’s condition and troubleshoot recurring issues.
Professional Support
For complex faults (e.g., electrical system malfunctions, precision component damage), contact the equipment manufacturer’s after-sales team instead of disassembling components randomly.
